#!/bin/bash
source_directory="shaders/source"
compiled_directory="shaders/compiled"
vulkan_version="1.0"
mkdir -p $compiled_directory
rm -f $compiled_directory/*


echo "compiling from $source_directory -> $compiled_directory"
for file in "$source_directory"/*; do
	filename=$(basename "$file")
    if [[ "$filename" =~ ^([^\.]+)\.([^\.]+)\.([^\.]+)$ ]]; then
        middlepart="${BASH_REMATCH[2]}"
		filename="${BASH_REMATCH[1]}.${BASH_REMATCH[2]}"
		shader_language="${BASH_REMATCH[3]}"

		if [[ "$shader_language" != "glsl" ]]; then 
			echo "FUCK YOU I'M NOT COMPILING HLSL SHADERS, DO IT YOURSELF"
			exit 1
		fi


        if [[ "$middlepart" == "frag" ]]; then
			echo "frag $filename.$shader_language > $filename.spv"
			glslc -O -fshader-stage=fragment --target-env=vulkan$vulkan_version "$source_directory/$filename.$shader_language" -fshader-stage=fragment -o "$compiled_directory/$filename.spv"
		elif [[ "$middlepart" == "vert" ]]; then
			echo "vert $filename.$shader_language > $filename.spv"
			glslc -O -fshader-stage=vertex --target-env=vulkan$vulkan_version "$source_directory/$filename.$shader_language" -o "$compiled_directory/$filename.spv"
        fi
    fi
done

tree $compiled_directory